US1815170A - Refrigerating apparatus - Google Patents

Description

July 21, 1931. 0, U M 1,815,170

REFRIGERATING APPARATUS Filed March 24, 1928 2. Sheets-Shqet l July 21, 1931. (1 SUMMERS i,815,170

REFRIGERATING APPARATUS 1 Filed March 24, 1928 2 Sheena-sheet 2 Patented July 21, 1931 UNITED STATES PATENT OFFICE OTTO M. SUMMERS, OF DAYTON, OHIO, ASSIGNOR 'JIO FRIGIDAIRE CORPORATION, OF DAYTON, OHIO, A CORPORATION 01' DELAWARE mrenmrme arramrus Application filed amen 24, 1928. Serial in. 204,503.

This invention relates to refrigerating apparatus and more particularly to a sound deadening mounting for the refrigerating machinery.

An object of this invention is to provide a refrigerating system in which the motor which drives the machinery is isolated from the rest of the refrigerator by sound deadening means.

Another object of this invention is to provide a mounting for a motor, which mounting has sound deadening means.

Another object of this invention is to provide a resilient mounting for a motor which has compressed rubber breaking any metallic contact between the motor and the base upon which it is mounted.

Another object of this invention is to provide a rubbermounting for a motor which permits the use of a belt drive without slipage. p Further objects and advantages of the present invention will be apparent from the following description, reference being bad to the accompanying drawings, wherein a preferred form of the embodiment of present invention is clearly shown.

In the drawings: 7 Fig. 1 is a perspective view of a motor and compressor embodying features of my inventlon;

Fig. 2 is an enlarged side view of a portion of the spring mounting and a portion of the motor;

Fig. 3 is an enlarged cross sedtion of a portion of the spring mounting of the motor;

Fig. 4 is a perspective of one of the members shown in Fig. 3;

Fig. 5 is a perspective of a rubber member shown in Fig. 3 before being subjected to compression.

A refrigerating system embodying features of my invention may comprise a motor 20 driving a compressor 21 by means of a belt 22. The compressor 21 may be connected to other parts of the refrigerating system not shown. For instance, the compressor may deliver compressed refrigerant to a condenser which discharges liquefied refrigerant to a receiver. The receiver delivers liquid refrigerant to an evaporator which absorbs heat units from the space to. .be refrigerated and returns the evaporated refrigerant to the compressor. These parts of the system may be of the well known variety and have not been illustrated.

The motor 20 may have a drive shaft 30 WhlGh may be provided with a pulley (not ibowii) at the end opposite that shown in The drive shaft 30 drives the belt 22 by means of said pulley. The belt 22 drives the large wheel 31 of the crankshaft of the compressor which lies in an axis substantially in line with plug 32.

The motor 20 and the compressor 21 may be mounted on a base generally designated as 33. 'The compressor, if desired, may be rigidly bolted to the base 33 by such means as bolts 34. The motor 30 may be mounted on the base 33 with rubber breaking metallic contact between the motor and base. As a means ofso mounting the motor, the motor 20 may be mounted on the base 33 by means of C-shaped leaf springs 35. These springs 35 may be of stiff resillent metal and they. may be placed transversely to the plane of the belt 22. The springs may be bolted to the base 33 by means of bolts 36. Rubber may be interposed between the motor and base preferably at the upper free ends 37 of springs 35 which may be attached to the motor 20 by special rubber interposing means generally designated as 40.

The special means 40 may comprise two cup shaped members 41 having apertures 42 slightly larger in diameter than a bolt 43 which passes thru said members 41. The ends 37 of the springs 35 may be provided with an aperturesubstantially the same or larger than the apertures 42 of members 41. An end 37 of one of the springs 35 may be interposed between said members 41. Additional washers 45 slightly smaller in external diameter than member 41 and have central apertures of the same diameter as spring ends 37 may be placed on either side of the spring ends 37. Two rubber members 46, shown before assembly in Fig. 5, may be interposed between each of two members 41 and 45. -Before assembly, these rubber mem- 2 1,e1a,1'ro

here 46 may be disc-shaped with extensions 44. The bolt 43 with washers 13:: may be placed thru a pedestal 47 of the motor and may pass thru the members 37, 41, 45 and 46. These members may then be compressed b means of nut 48 with a washer 49 mt'e between. This nut 48 will be drawn u tightly enou h to cause the rubber of mem re 46 to flow in between the bolt 43 and the mem- 30 bers 37, 41, 43 and 45 as well as at the flanges of member 41. It is thus seen that the podestal 47 of the motor 20 has no metallic contact with the springs 85. f V

Since the belt 22 is the t of a drive which includes a sound dea ening member, the usual motor hum is not transmitted thru the belt drive 22. The rubber members 46 also are sound deadening members, and the are interposed between the motor 20 an the base 33 and do not transmit the hum. Becausethe rubber members 46 are tightly com ressed, proper tension can be given to the belt 22 to prevent slippage. Since the springs 35 are specially ma e to be relative- 3 1y unyielding in the direction of the compressor but provide a slight resiliency in a vertical direction they also provide resiliency of the type which does not cause belt slippage. While the form of embodiment of the present invention as herein disclosed constitutes a preferred form, it is tobe understood that other forms might beadopted, all coming within the scope'of the claims which fol- What is elaimdis' as follows: 1. A support' for'a inotor, comprisinga plurality of substantially C-shaped metal springs having their adjacent edges secured to said motor, and sound deadening material between said mptor and said springs substantially as described. 2. A support for a motor including alplu- ,rality of substantially C-shaped metallic 5 springs having adjacent edges facingup- 'wardly, said-edges supporting said motor, and a plurality of rubber partitions-between the motor and said edges substantially as described. In testimony whereof I hereto afiix my signature. OTTO, M. SUMMERS.

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